Sensible advice. I had a LCI 335i SE E90 saloon, and it was by far one of the best 'all round' cars I have ever owned, at a slight expense of initial turn in 'feel' compared to the M Sports. Very comfy on 17s with non RFT. I'd had two M Sports previously, a coupe on 19s (non RFT) and a saloon on 18s (RFT) and both were uncomfortable. The N55 was very economical, often returning 460-480 miles between fill ups (I had a long motorway commute). I'd look to a LCI 330d SE with sport seats if I wanted a diesel or, if you can put up with the ride quality and really have to have the slightly different bumpers, go for an M Sport. As arfoll suggests, you'll be much better off fitting some aftermarket dampers (Koni FSD are supposed to be a good choice for comfort and handling) than either the SE or M Sport dampers.